Steel Beam Sizes / AISC / HSS Rectangular / HSS 20x8x7/8

HSS 20x8x7/8 Steel Beam Dimensions and Properties

AISC Rectangular HSS · v16.0

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Diagram, properties emphasis, and nearby alternatives use the selected unit system.

Units

Section diagram

HSS 20x8x7/8 dimensions

Not to scale. Dimensions shown for reference.

Section properties

Symbols match the steel section finder. Imperial and metric values are shown side by side.

Property Imperial Metric
Weight 149.61 lb/ft 223.00 kg/m
Height 20.00 in 508.00 mm
Width 8.00 in 203.00 mm
Nominal tw 0.875 in 22.200 mm
Design tw 0.814 in 20.700 mm
Area 41.20 in² 26,600.00 mm²
Ix 1,880.00 in⁴ 783,000,000 mm⁴
Iy 432.00 in⁴ 180,000,000 mm⁴
Sx 188.00 in³ 3,080,000 mm³
Sy 108.00 in³ 1,770,000 mm³
Zx 246.00 in³ 4,030,000 mm³
Zy 127.00 in³ 2,080,000 mm³
rx 6.74 in 171.00 mm
ry 3.24 in 82.30 mm
J 1,200.00 in⁴ 499,000,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus HSS 20x8x7/8.

Lighter in Rectangular HSS

HSS 20x16x5/8

Weight
144.4 lb/ft (-3.5%)
Depth
20.00 in (0.0%)
Ix
2,320.0 in⁴ (+23%)

Heavier in Rectangular HSS

HSS 20x12x3/4

Weight
150.8 lb/ft (+0.8%)
Depth
20.00 in (0.0%)
Ix
2,190.0 in⁴ (+16%)

Closest Iₓ in Rectangular HSS

HSS 20x12x5/8

Weight
127.4 lb/ft (-15%)
Depth
20.00 in (0.0%)
Ix
1,880.0 in⁴ (0.0%)
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Source: AISC Shapes Database v16.0 · Methodology